Conversioni da numeri Romani in numeri Arabi
Vedi lo Script
<!-- Script by renatoweb.it --> <style type="text/css"> .txt{border:1px solid grey;width:150px;height:25px;font-size:12px;padding:5px;} .fnt{font-size:12px;font-family:arial,verdana;} </style> <script type="text/javascript"> var rarr = new Array("M", "CM", "D", "CD", "CCC", "CC", "C", "XC", "L", "XL", "XXX", "XX", "X", "IX", "V", "IV", "III", "II", "I"); var narr = new Array(1000,900,500,400,300,200,100,90,50,40,30,20,10,9,5,4,3,2,1); var warr = new Array("CMCM", "CMD", "CMCD", "CMC", "DD", "DCD", "CDCD", "CDC", "CCCC", "XCXC", "XCL", "XCXL", "XCX", "LL", "LXL", "XLXL", "XLX", "XXXX", "IXIX", "IXV", "IXIV", "IXI", "IVIV", "IVI", "IIII"); var carr= new Array("MDCCC", "MCD", "MIII", "M", "M", "CM", "DCCC", "D", "CD", "CLXXX", "CXL", "CIII", "C", "C", "XC", "LXXX", "L", "XL", "XVIII", "XIV", "XIII", "X", "VIII", "V", "IV"); function convert_numeric() { var rom = document.getElementById("romanici").value; var roman = rom.replace(/ /g, ""); roman = roman.toUpperCase(); roman = roman.replace(/[^IVXLCDM]/g, ""); document.getElementById("romanici").value=roman; if (roman.length == 0) { document.getElementById("ris").innerHTML = ""; return; } var position = 0; var risult = 0; var pp = -1; while(position < roman.length) { var p = getnextletter(roman, position); if (pp != 0) { if ( narr[pp] < narr[p] ) { document.getElementById("ris").innerHTML = "Errore "+rarr[p]+" non dovrebbe seguire "+rarr[pp]; return; } } if(p < 0) return; position += rarr[p].length; risult += narr[p]; pp = p; } document.getElementById("ris").innerHTML = risult; } function getnextletter(roman, position) { for (i=0; i<warr.length; i++) { if ( roman.indexOf(warr[i], position) == position ) { document.getElementById("ris").innerHTML = warr[i] + " non corretto sostituire con " + carr[i] + "."; return -1; } } for (i=0; i<rarr.length; i++) { if ( roman.indexOf(rarr[i], position) == position) return i; } document.getElementById("ris").innerHTML = "non valida in " +position; return -1; } </script> <!-- Script by renatoweb.it--> <body> <table align=center> <tr><td class="fnt">Numeri Romani:</td><td><input type="text" class="txt" id="romanici" value="" onkeyup="convert_numeric()"></td></tr> <tr><td class="fnt">Numeri Arabi:</td><td class="fnt"><div id="ris" style='border:1px solid grey;height:22px; padding: 2px; padding-left: 8px;'></div></td></tr> <tr><td colspan=2><div align=center style="font-size: 10px; color:green;" id="miodiv"> <a href="http://www.renatoweb.it" id="mio" style="text-decoration:none; color: red;">©renatoweb</a> </div></td></tr> </table> </body> </html>